Please use this identifier to cite or link to this item: https://doi.org/10.1145/1966913.1966924
Title: Strongly secure certificateless key exchange without pairing
Authors: Yang, G. 
Tan, C.-H. 
Issue Date: 2011
Source: Yang, G.,Tan, C.-H. (2011). Strongly secure certificateless key exchange without pairing. Proceedings of the 6th International Symposium on Information, Computer and Communications Security, ASIACCS 2011 : 71-79. ScholarBank@NUS Repository. https://doi.org/10.1145/1966913.1966924
Abstract: In certificateless cryptography, a user secret key is derived from two partial secrets: one is the identity-based secret key (corresponding to the user identity) generated by a Key Generation Center (KGC), and the other is the user self-generated secret key (corresponding to a user self-generated and uncertified public key). Two types of adversaries are considered for certificateless cryptography: a Type-I adversary who can replace the user self-generated public key (in transmission or in a public directory), and a Type-II adversary who is an honest-but-curious KGC. In this paper, we present a formal study on certificateless key exchange (CLKE). We show that the conventional definition of Type-I and Type-II security may not be suitable for certificateless key exchange when considering the notion of forward secrecy which is important for key exchange protocols. We then present a new security model in which a single adversary (instead of Type-I and Type-II adversaries) is considered. We also construct a strongly secure certificateless key exchange protocol without expensive pairing operations. As far as we know, our proposed protocol is the first proven secure CLKE protocol without pairing. Copyright 2011 ACM.
Source Title: Proceedings of the 6th International Symposium on Information, Computer and Communications Security, ASIACCS 2011
URI: http://scholarbank.nus.edu.sg/handle/10635/115500
ISBN: 9781450305648
DOI: 10.1145/1966913.1966924
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